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Manish Kumar

AI Engineer | Java Developer | Backend Developer | 4.6+ Years Exp | Immediate Joiner | Actively seeking Software Developer Roles | Java | Spring Boot | Microservices | SQL | AWS | Kafka

Bengaluru

4+ years of work experience

GeekyAnts
May 20265 mosPresent

Bengaluru

● Architected a distributed event-driven microservices architecture across 5 Spring Boot services using Spring Cloud Gateway, defining strict domain boundaries and boosting platform processing throughput by 35%. ● Engineered a fault-tolerant message streaming pipeline using Apache Kafka and Transactional Outbox/Inbox patterns, guaranteeing 99.999% message delivery reliability and zero data loss under high-concurrency loads. ● Spearheaded zero-trust security infrastructure using Spring Security, JWT token rotation, and fine-grained RBAC, protecting multi-tenant API transactions for over 100,000 active users. ● Standardized compile-time type-safe persistence layers with PostgreSQL, Flyway, and jOOQ, eliminating SQL runtime errors and reducing database deployment iteration cycles by 50%. ● Formulated resilient RPC and inter-service communication policies with OpenFeign and Resilience4j circuit breakers, preventing cascading failure modes and sustaining 99.99% system availability. ● Established full-stack observability pipelines using Micrometer, Prometheus, Zipkin, and Grafana, cutting Mean Time to Detect (MTTD) operational bottlenecks by 45%. ● Tech Stack: Java 21, Spring Boot 3, Spring Cloud Gateway, Eureka, Config Server, PostgreSQL, Kafka, jOOQ, Flyway, Spring Security, JWT, OpenFeign, Resilience4j, Docker, Prometheus, Grafana, Zipkin, Micrometer.
Infosys
Nov 20241 yr 4 mosFeb 2026

Bengaluru

● Directed the architectural overhaul of core administrative microservices using Java 17 and Spring Boot, driving a 30% increase in system throughput across high-traffic enterprise workflows. ● Eliminated read-path latency spikes by designing multi-tier Redis distributed caching strategies, achieving sub-20ms response times for high-concurrency query traffic. ● Optimized relational datastores via MySQL query refactoring, composite indexing, and Hibernate fetch tuning, slashing p99 database latency by 20%. ● Championed automated testing frameworks using JUnit 5, Mockito, and Testcontainers to increase test coverage from 40% to 80%, reducing production regression incidents by 25%. ● Automated CI/CD deployment pipelines using Jenkins, Maven, and Docker containers, enabling zero-downtime deployments and accelerating release cadence by 40%. ● Provided technical leadership and code review mentorship to 3 junior software engineers, boosting engineering standards and increasing team velocity by 20%. ● Tech Stack: Java 17, Spring Boot, Spring Security, OAuth2, JWT, Hibernate, MySQL, Redis, JUnit 5, Mockito, Jenkins, Docker, Maven.
LeadSquared
Sep 20231 yr 2 mosOct 2024

Bengaluru

● Led backend system design for high-throughput messaging infrastructure across 50+ Spring Boot microservices processing millions of daily WhatsApp and SMS transactions. ● Scaled API gateway request handling capacity by 30% while reducing API latency by 20% through REST payload optimization and thread execution tuning. ● Architected distributed streaming ingestion workflows using Apache Kafka, decoupling event producers and absorbing peak traffic bursts with zero operational degradation. ● Accelerated write-heavy search analytics queries by 25% by configuring custom Elasticsearch index sharding strategies and Redis caching. ● Orchestrated cloud infrastructure scaling on AWS (EC2, ECS, CloudWatch) with Docker, optimizing autoscaling parameters and lowering cloud operational spend by 15%. ● Constructed real-time telemetry dashboards in Grafana and Kibana, reducing Mean Time to Resolution (MTTR) for high-severity incidents by 35%. ● Tech Stack: Java, Spring Boot, Microservices, Apache Kafka, Elasticsearch, Redis, MySQL, AWS (EC2, ECS, CloudWatch), Docker, Grafana, Kibana, REST APIs.
Acutec Global Services LLP
Mar 20236 mosAug 2023

Noida

● Designed core transactional auditing modules using Java, Spring Boot, and Hibernate, guaranteeing ACID compliance and immutable financial ledger tracking. ● Reduced relational database query latency by 40% through query plan optimization, composite indexing, and JPA batch fetching tuning. ● Implemented stateless authorization mechanisms via Spring Security and JWT, enforcing tenant data isolation across REST endpoints. ● Built asynchronous task execution pipelines with Spring Events, preventing thread pool starvation during heavy report generation requests. ● Tech Stack: Java, Spring, Spring Boot, Spring Security, Hibernate, MySQL, PostgreSQL, JUnit, Mockito, REST APIs, Git.
Active.Ai - A Gupshup Inc Company
Dec 20211 yr 2 mosJan 2023

Bengaluru

● Engineered enterprise routing workflows utilizing Apache Camel and Enterprise Integration Patterns (EIP), reducing message routing latency by 30%. ● Integrated WhatsApp Business APIs and webhook endpoints, increasing messaging reach by 50% for enterprise client integration flows. ● Constructed resilient message queuing systems using ActiveMQ / RabbitMQ with Dead-Letter Channels (DLC), guaranteeing automated error recovery and message reprocessing. ● Tech Stack: Java, Spring Boot, Apache Camel, Enterprise Integration Patterns (EIP), ActiveMQ, REST APIs, Webhooks, WhatsApp API, JUnit, Git.
GitHub
@atmanishk
LeetCode
@atmanishk
Personal portfolioatmanishk.netlify.app

Manish’s AI Stack

antigravity
antigravity
claude code
claude code
claude
claude
codex
codex
cursor
cursor
openai
openai

Education

Guru Gobind Singh Indraprastha University

Master of Computer Applications, Computer Science

Guru Gobind Singh Indraprastha University

20173 yrs2020
Ranchi University, Ranchi

Bachelor of Computer Application, Computer Science

Ranchi University, Ranchi

20143 yrs2017

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Headline

AI Engineer | Java Developer | Backend Developer | 4.6+ Years Exp | Immediate Joiner | Actively seeking Software Developer Roles | Java | Spring Boot | Microservices | SQL | AWS | Kafka

About

Backend Engineer with 4.6+ years of experience in Java, Spring Boot, and microservices, building scalable and high-performance systems. Currently at Infosys, I’ve developed core features like search APIs and a calendar module, improving efficiency by 30% and reducing production issues through strong testing and optimization. Previously, I worked on microservices migration, improving scalability and reducing API response time using Redis, Elasticsearch, and database tuning. Experienced in AWS, Docker, Kafka, and distributed systems. I enjoy solving performance and scalability challenges and have built a distributed URL shortener using event-driven architecture. Solved 300+ DSA problems (LeetCode 1443, HackerRank Gold - Java). Looking for SDE-2/backend roles to build and scale impactful systems 🚀 SKILLS Languages & Core : Java (8/17/21), SQL, Data Structures & Algorithms, Object-Oriented Design, System Design, Concurrency, Multithreading Frameworks & Architecture : Spring Boot, Spring Cloud, Spring Security, Microservices Architecture, Event-Driven Architecture, REST APIs, GraphQL, Webhooks, Hibernate, jOOQ, JUnit 5, Mockito, Resilience4j, Apache Camel Distributed Systems & Observability : Apache Kafka, RabbitMQ, ActiveMQ, Redis, Elasticsearch, Prometheus, Grafana, Zipkin, Micrometer, Kibana, Zookeeper Datastores & Cloud Infrastructure : PostgreSQL, MySQL, MongoDB, DynamoDB, AWS (EC2, ECS, S3, CloudWatch), Docker, Kubernetes, CI/CD, Jenkins, Maven, Git

Location

Bengaluru

AI stack

antigravity

claude code

claude

codex

cursor

openai

Work experience

Senior Software Engineer at GeekyAnts, May 2026 - Present · 5 mos, Bengaluru, ● Architected a distributed event-driven microservices architecture across 5 Spring Boot services using Spring Cloud Gateway, defining strict domain boundaries and boosting platform processing throughput by 35%. ● Engineered a fault-tolerant message streaming pipeline using Apache Kafka and Transactional Outbox/Inbox patterns, guaranteeing 99.999% message delivery reliability and zero data loss under high-concurrency loads. ● Spearheaded zero-trust security infrastructure using Spring Security, JWT token rotation, and fine-grained RBAC, protecting multi-tenant API transactions for over 100,000 active users. ● Standardized compile-time type-safe persistence layers with PostgreSQL, Flyway, and jOOQ, eliminating SQL runtime errors and reducing database deployment iteration cycles by 50%. ● Formulated resilient RPC and inter-service communication policies with OpenFeign and Resilience4j circuit breakers, preventing cascading failure modes and sustaining 99.99% system availability. ● Established full-stack observability pipelines using Micrometer, Prometheus, Zipkin, and Grafana, cutting Mean Time to Detect (MTTD) operational bottlenecks by 45%. ● Tech Stack: Java 21, Spring Boot 3, Spring Cloud Gateway, Eureka, Config Server, PostgreSQL, Kafka, jOOQ, Flyway, Spring Security, JWT, OpenFeign, Resilience4j, Docker, Prometheus, Grafana, Zipkin, Micrometer.

Associate Consultant at Infosys, Nov 2024 - Feb 2026 · 1 yr 4 mos, Bengaluru, ● Directed the architectural overhaul of core administrative microservices using Java 17 and Spring Boot, driving a 30% increase in system throughput across high-traffic enterprise workflows. ● Eliminated read-path latency spikes by designing multi-tier Redis distributed caching strategies, achieving sub-20ms response times for high-concurrency query traffic. ● Optimized relational datastores via MySQL query refactoring, composite indexing, and Hibernate fetch tuning, slashing p99 database latency by 20%. ● Championed automated testing frameworks using JUnit 5, Mockito, and Testcontainers to increase test coverage from 40% to 80%, reducing production regression incidents by 25%. ● Automated CI/CD deployment pipelines using Jenkins, Maven, and Docker containers, enabling zero-downtime deployments and accelerating release cadence by 40%. ● Provided technical leadership and code review mentorship to 3 junior software engineers, boosting engineering standards and increasing team velocity by 20%. ● Tech Stack: Java 17, Spring Boot, Spring Security, OAuth2, JWT, Hibernate, MySQL, Redis, JUnit 5, Mockito, Jenkins, Docker, Maven.

Software Engineer at LeadSquared, Sep 2023 - Oct 2024 · 1 yr 2 mos, Bengaluru, ● Led backend system design for high-throughput messaging infrastructure across 50+ Spring Boot microservices processing millions of daily WhatsApp and SMS transactions. ● Scaled API gateway request handling capacity by 30% while reducing API latency by 20% through REST payload optimization and thread execution tuning. ● Architected distributed streaming ingestion workflows using Apache Kafka, decoupling event producers and absorbing peak traffic bursts with zero operational degradation. ● Accelerated write-heavy search analytics queries by 25% by configuring custom Elasticsearch index sharding strategies and Redis caching. ● Orchestrated cloud infrastructure scaling on AWS (EC2, ECS, CloudWatch) with Docker, optimizing autoscaling parameters and lowering cloud operational spend by 15%. ● Constructed real-time telemetry dashboards in Grafana and Kibana, reducing Mean Time to Resolution (MTTR) for high-severity incidents by 35%. ● Tech Stack: Java, Spring Boot, Microservices, Apache Kafka, Elasticsearch, Redis, MySQL, AWS (EC2, ECS, CloudWatch), Docker, Grafana, Kibana, REST APIs.

Java Developer at Acutec Global Services LLP, Mar 2023 - Aug 2023 · 6 mos, Noida, ● Designed core transactional auditing modules using Java, Spring Boot, and Hibernate, guaranteeing ACID compliance and immutable financial ledger tracking. ● Reduced relational database query latency by 40% through query plan optimization, composite indexing, and JPA batch fetching tuning. ● Implemented stateless authorization mechanisms via Spring Security and JWT, enforcing tenant data isolation across REST endpoints. ● Built asynchronous task execution pipelines with Spring Events, preventing thread pool starvation during heavy report generation requests. ● Tech Stack: Java, Spring, Spring Boot, Spring Security, Hibernate, MySQL, PostgreSQL, JUnit, Mockito, REST APIs, Git.

Trainee Engineer at Active.Ai - A Gupshup Inc Company, Dec 2021 - Jan 2023 · 1 yr 2 mos, Bengaluru, ● Engineered enterprise routing workflows utilizing Apache Camel and Enterprise Integration Patterns (EIP), reducing message routing latency by 30%. ● Integrated WhatsApp Business APIs and webhook endpoints, increasing messaging reach by 50% for enterprise client integration flows. ● Constructed resilient message queuing systems using ActiveMQ / RabbitMQ with Dead-Letter Channels (DLC), guaranteeing automated error recovery and message reprocessing. ● Tech Stack: Java, Spring Boot, Apache Camel, Enterprise Integration Patterns (EIP), ActiveMQ, REST APIs, Webhooks, WhatsApp API, JUnit, Git.

Education

Master of Computer Applications, Computer Science, Guru Gobind Singh Indraprastha University

Bachelor of Computer Application, Computer Science, Ranchi University, Ranchi

Public links

github: https://github.com/atmanishk

leetcode: https://leetcode.com/atmanishk

atmanishk.netlify.app: https://atmanishk.netlify.app/